862940844 has 48 divisors (see below), whose sum is σ = 2275190400. Its totient is φ = 282769488.

The previous prime is 862940843. The next prime is 862940851. The reversal of 862940844 is 448049268.

It is a self number, because there is not a number n which added to its sum of digits gives 862940844.

It is not an unprimeable number, because it can be changed into a prime (862940843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61342 + ... + 74085.

It is an arithmetic number, because the mean of its divisors is an integer number (47399800).

Almost surely, 2^862940844 is an apocalyptic number.

It is an amenable number.

862940844 is an abundant number, since it is smaller than the sum of its proper divisors (1412249556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

862940844 is a wasteful number, since it uses less digits than its factorization.

862940844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135499 (or 135491 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 45.

The square root of 862940844 is about 29375.8547790528. The cubic root of 862940844 is about 952.0512809864.

The spelling of 862940844 in words is "eight hundred sixty-two million, nine hundred forty thousand, eight hundred forty-four".